Hoist for motor-vehicles.



H. F. RIOHELLE. HOIST ron MOTOR VEHICLES.

APPLICATION FILED AUG-24.1911- m m l m IT 1 w m3 R m r 0m 7 m3 r 1 a m tH. F. RIiO'PELLE.

HOIST ma ,MOTOR VEHICLES.

APPLICATION FILED AUG.24. I917.

Patented Aug. 13, 1918.

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APPLICATION HLED AUG.24. 19H.

Patented Aug. 13, 1918.

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HARRY r. RIOPELLE, or DETROIT, MICHIGAN, ASSIGNOR, BY IviEsnEASSIGNMENTS, or ONE-HALF To ANTOINETTE T. SANSGRAINTE, or noonsn,MICHIGAN.

HOIST FOB, MOTOR-VEHICLES.

Application filed August 24, 1917. Serial No. 187,974.

To all whom it may concern:

Be it known that I, HARRY F. RIOPELLE, a citizen of the United States,residing at Detroit, in the county of Wayne and State a of Michigan,have invented a new and useful Hoist for Motor-Vehicles, of which thefollowing is a specification.

This invention relates to derricks or hoisting mechanism for motortrucks, such as is employed to load or unload heavy articles or to tiltthe platform or bed of the truck to or from a dumping position.

It is the object of the invention to provide a hoist mechanismparticularly adapted to be quickly and detachably mounted for use upon amotor truck of any standard construction and actuable by the motor ofsuch a truck.

Another obj ect is to provide a hoist mechanism for a motor vehicleadapted to be driven by the motor of the vehicle through a pair offriction wheels normally out of driving engagement but adapted to beshifted into contact, and to automatically maintain the frictionalintensity of such driving contact proportional to the load under whichthe hoist is working.

The novel features of construction whereby these objects are attainedare hereinafter fully described, and a preferred structural arrangementis illustrated in the accompanying drawings, wherein,

Figure 1 is a View in side elevation of a motor truck equipped with theherein described hoist mechanism, two working positions of the latterbeing shown, one in full and the other in dash lines.

Fig. 2 is a sectional elevation taken on section line 22 of Fig. 1,showing the lower portion of the hoist mechanism, and having portionsthereof broken away to show the interior arrangement of parts.

Fig. 3 is a section taken upon zigzag line 3-3 of Fig. 2, showingparticularly the novel features of the hoist drum and the mounting ofdrive gearing for said drum.

In these views the reference character 1 designates theside sills, 2 theplatform or box 3 the motor and 4: the main drive-shaft Specification ofLetters Patent.

Patented. Aug. 13, 1918.

It is to be understood, however, that theinvention is by no meanslimited to trucks of the self-dumping type. The hoist mechanism iscarried by a frame comprising a base 6, a mast 7 rigidly upstanding fromsaid base, and a pair of brace bars 8 extended to the base from the topof the mast, which frame is adapted to be quickly mounted upon a motortruck just in front of the box 2 by means of L-shaped bolts 9 engagingthe extremities of the base and hooking around the sills 1 of the truck.(See Fig. 2).

At an intermediate point of the mast, a boom 10 extends rearwardly at anincline therefrom, the connection of the same with the mast beingthrough a ball-and-socket joint 11, which permits the boom to be swungto overhang the sides of the truck, or to occupyi the relatively raisedinclined position shown in dash lines in Fig. 1; To retain the boomraised in either of the positions shown in said figure, a cable 12 isextended between the end of the boom and the top portion of the mast. Atthe mast top is mounted a sheave 13, another sheave 141- is carried atthe outer end ofthe boom, and a third sheave 15, carrying a hook 16, issuspended by a cable 17 rove over the sheaves 13 and 1 1, and is adaptedto be wound upon a drum18. This drum is mounted upon a shaft 19 parallelto the drive-shaft 4:, having its rear end journaled in the mast 7 andits front end in the lower end of a bracket 20 mounted upon the mast.The rim portion ofthe front head of the drum 18 forms an internalgearf21, and the space within said gear is closed by a plate 22 looseupon the shaft 19 and adapted to be rocked or oscillated upon said shaftbya means hereinafter described. W ithin the chamber formed by theinternal gear 21 and plate 22 are disposed pinions 23 and 24:, theformer meshing with said internal gear and being carried by a stud shaft25 projecting from the plate 22, and the latter being mounted maintainthe friction wheel 28raised slightly 27, and at the other end the lowerextremity of a link 32 is pivotally engaged with the plate 22. The upperend of said link has pivotal connection with a lever 33 intermediatelypivoted upon the bracket 20 and serving-to actuate: a slight oscillatorymovement of the plate 22, whereby the :largefriction wheel 28 may beshifted slightly down- :ward from its normal raised position so as to beengaged by the small friction wheel 29. A spring 34 extending upwardlyfrom the lever 33 to a standard 35 surmounting the bracket 20constitutes means for holding the plate 22 normally in a position suchas to above the smaller wheel 29, in which positionthe rim of said wheelengages a brake shoe 36 carried by the-standard 35.

In the use of the above described mechanism it will be readilyunderstood that the exertion upon the handle of the lever .33 ofsufficient pressure to overcome the spring 34 willrock the plate 22slightly so as to elevate the partthereof to which the link 32 isattached and lower the part carrying the shafts 25 and 26. Thus thelarge wheel 28 will be brought into engagement with the small wheel 29and will be driven provided the-motor 3 is running. Through thegeartrain24, 23, and 21, the drum 18 willalso be driven, winding on thecable 17 and raislng any suitable load that may be engaged with the hook16. As soon as thecable 17 is under stress of a load, the lever 33 maybe released, since the rotative force acting in said drum, as a resultof'the load and having a direction .counterto that in which the drum isgiven, will act upon the plate 22 .through the gears 21 and 23independently of their relative rotation and tend to maintain'anintensity of friction'between the two wheels 28 and 29 proportionate tothe load.

-Thus it-isautomatically insured that there will be no slipping betweenthe friction wheels, and yet anundue high intensity of friction isavoided. When the load has been raised to the desiredheight, an upwardpull upon'the end of the lever 33 will shift the wheel 28 out ofengagement with the wheel :29 and into engagement with the brake shoe36. While said pull upon the lever is maintained, the load is heldraised at the desired elevation and-may be shifted to or from a positionabove the platform 2 by swinging the boom 10 to either side of thetruck. The load may then be lowered at the desired rate of speed byregulating the upward pull upon the lever 33 and thus regulating thebraking friction. hen the boom is shifted to the raised positiondisclosed in dash lines in Fig. 1 the length of the cable 12 will beshortened as also shown in dash lines so as to hold the boom elevatedand enable the hook 16 of the fall to be connected with the body toelevate the same and dump the load.

I claim:

1. In a hoist mechanism, a drum, a memberpivoted adjacent said drum at apoint substantially in line with the axis thereof, a friction wheel-fordriving said drum, mechanism carried by said pivoted member foractuating the drum. from said friction wheel including a friction wheelengaged with or disengaged from the driving friction wheel throughrocking ,of said pivoted member, and means for rocking said pivotedmember.

2. In a hoist mechanism, a drum, an internal gear concentrically carriedby said drum, a member pivoted adjacent. said gear at a pointsubstantially in line with the axis thereof, a shaft journaled in saidmember, a gear carried by said shaft, adapted to drive said internalgear, means for rocking said pivoted member, and a pair of frictiondrive wheels, one of which is mounted upon said shaft, said Wheels beingengaged or disengaged through rocking of said member.

3. In a hoist mechanism, a drum, an internal gear concentrically carriedby said drum, a member pivoted adjacent said gear at a pointsubstantially in line with the axis thereof, a shaft journaled in saidmember, a gear carried by said shaft, adapted to drive said internalgear, means for rocking said pivoted member, a pair of friction drivewheels, one of which is mounted upon said shaft, said wheels beingengaged or disengaged through rocking of said member and a brake withwhich the friction wheel upon said shaft is engageable when disengagedfrom its companion friction wheel.

4. In ahoist mechanism, a drum, an internal gear concentrically carriedby said drum, a member pivoted adjacent said gear at apointsubstantially in line with the axis thereof, a shaft journaled in saidmember,

a gear carried by said shaft, adapted to drive said internalgear, meansfor rocking said pivotedmember, a pair of friction drive wheels, one ofwhich is mounted upon said shaft, said wheels being engaged ordisengaged through rocking of said member, and means normally retainingthe pivoted member in a position to disengage the two frid tion wheels.

5. In a hoist mechanism, a drum, an interna]. gear concentricallycarried thereby, gear, and a pair of friction Wheels for driva platepivoted at a point substantially in ing said shaft, one of Which ismounted line with the axis of said gear, closing the thereupon, saidWheels being engaged or dis- 10 interior space thereof, means forrocking engaged through rocking of said plate.

5 said plate upon its pivot, a shaft eccentri- In testimony whereof Isign this specificacally journaled in said plate, a gear upon tion. saidshaft adapted to drive said internal HARRY F. RIOPELLE.

Gopies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents,

Washington, D. 0.

